Automatic window stop



July 21, 1964 G- S. GUNARD AUTOMATIC WINDOW STOP Filed Jan. 22 1962 2Sheets-Sheet 1 INVENTOR,

6601349 5. Guzuizd y 21, 1964 G. s. GUNARD 3,141,691

AUTOMATIC WINDOW STOP Filed Jan. 22, 1962 2 Sheets-Sheet 2 2; /4 2/ ,5/4 2/ 20 la 1 35 .5 A $3 .6

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INVENTOR,

George S. Gunard United States Patent 3,141,691 AUTOMATIC WINDOW S'IGPGeorge S. Gunard, 61 Pine Hill Ave, Glenbrook, Conn. Filed Ian. 22,1962, Ser. No. 167,574 4- Claims. (Cl. 29275) This invention relates tofasteners and more particularly to that type of fastener more commonlyknown as a window stop by reason of its use to securely hold a window orthe like in any desired position.

Hardly a person alive has at one time or other not openly expressed adesire for a reliable window stop that will automatically hold thewindow in any desired position. While devices are admittedly on themarket with claims of automatically holding windows open as one maydesire, few, if any live up to the claims made for them.

It is, therefore, an object of this invention to provide a window stopof the automatic type that will at all times effectively hold the windowin any desired position.

Another object of this invention is to provide an automatic window stopof the character described that will not jam by reason of its foolproofconstruction.

Another object of this invention is to provide an automatic window stopof the character described that can readily be adapated to any size andtype of window.

Another object of this invention is to provide an automatic window stopthat will not break the glass by reason of undue pressure on the sash.

Another object of this invention is to provide an automatic window stophaving a minimum number of parts consistent with good design practice.

Another object of this invention is to provide an automatic window stopthat can be manufactured and sold at a price well within the reach ofeveryone who desires a device of this type.

Another object of this invention is to provide an automatic window stopthat will not scar any part of its frame no matter how constant the use.

Another object of this invention is to provide an automatic window stopthat will eliminate the use of sash weights and cords.

Another object of this invention is to provide an automatic window stopthat can, if necessary, be adjusted for maximum performance after it hasbeen installed on the window.

Still another object of this invention is to provide an automatic windowstop that can readily be installed by anyone no matter how limited theirexperience may be or how few tools they may have.

Other and further objects and advantages of this novel automatic windowstop will be hereinafter described, and the novel features thereofdefined in the appended claims.

Referring to the drawings:

FIGURE 1 is a pictorial view of the basic form of this inventioninstalled on a typical sliding type of window.

FIGURE 2 is a pictorial view of an optional form of this inventioninstalled on a window frame ready for use.

FIGURE 3 is a pictorial view of this invention in its basic form readyfor installing on a window.

FIGURE 4 is a pictorial view of one detail of this invention rotatedninety degress.

FIGURE 5 is an end view of the basic form of this invention.

FIGURE 6 is asectional view taken substantially along line 6-6 of FIGURE3 as viewed in the direction indicated by the arrows.

FIGURE 7 is a front exploded view of the form of this invention shown inFIG. 2.

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' Similar reference characters refer to similar parts throughout theseveral views of the drawings.

Having reference now to the drawings in detail, and in particular toFIGURES 3, 5 and 6, it will been that this invention consists of aU-shaped frame 12 having a pair of spaced openings 13 therein and asecond pair of spaced openings 14 therein and at right angle to thefirst stated pair of openings which pass from top to bottom of the saidframe while the second noted pairs of openings pass from side to side inthe same said frame. The purpose of the openings 13 and 14 is to providemeans for securing the frame to a window sash or frame as will be lateron described in this specification.

A yoke 15 also U-shaped in plan form and having a stem 16 at thelongitudinal center of the back is located within the said U-shapedframe 12 with the stem 16, on which has been placed a coil spring 17,projecting through an opening in the back of the said frame as clearlyshown in FIGURES 5 and 6 of the appended drawings.

Returning again to the aforesaid frame 12, it will best been seen onexamination of FIGURE 6 of the appended drawings that the frame is alsoprovided with a pair of openings in the sides 18 of the said frame 12are for the reception of alignment balls 19 which rest half in theopenings and half on the yoke 15 when this novel automatic window stopis assembled. The openings in the sides 18 are diametrically oppositeone another in order to insure a more stable structure. A coil spring 20is also placed in each opening and on top of each alignment ball 19which is held in place by the said coiled spring which in turn isprevented from springing out of the opening by a headless set screw 21which by adjusting the pressure on each one of coiled springs 20provides a means of alignment control of the said yoke 15 in whichlatter is rotatably mounted resilient cylinder means 22 having aplurality of concaved grooves 23 in circumferentially spaced relationand parallel to each other around its entire periphery as best shown inFIG- URE 3 of the appended drawings where it is also seen that a groove24 is formed completely around the circumference of the said cylindermeans and in the longitundinal center of the same. This groove 24 has adepth nearly equal to the radius of the said cylinder means, forming apair of rollers which are held in place in the aforesaid yoke 15 bymeans of a bolt 25 or its equivalent. The pair of rollers of course mustbe so mounted as to permit free turning within the said yoke.

The basic form of this novel invention of an automatic window stop hasnow been described with the exception of the placement of a locking pin26 through an opening in the outer end of the stem 16 after the saidyoke 15 and coil spring 17 have been placed within the frame 12 with thesaid stem 16 projecting through the already mentioned opening in theframe and with the spring 17 between the yoke 15 and the frame 12. Thelocking pin 26 of course holds the yoke in the frame which is nowmounted on the top of a window W (FIG. 1) by means of screws 27 passingdownward through the pair of openings 13 in the aforesaid frame 12 ofthis inventoin.

In the optional form of this automatic window stop the entire basic formof this invention is secured to the end of a pair of supporting members28 that are rectangular in every plan form and which are each providedwith a drilled recess for the reception of screws 29 as clearly shown inFIGURES 2 and 7. The said screws 29, of course, slidably pass throughboth the openings 14 in the frame 12 on through openings in members 28into the window jamb 30.

While only two forms of this invention of a window stop are shown in theappended drawings, there is truthfully speaking no limitations in thenumber of optional forms this invention can be made up into merely bychanging the method of mounting the aforementioned resilient cylindermeans 22 on a window sill or frame.-

As many embodiments may be made of this inventive concept, and as manymodifications may be made in the embodiment hereinbefore shown anddescribed, it will be understood that all matter herein is to beinterpreted merely as illustrative, and not in a limiting sense.

What I now claim as my invention and desire to secure by Letters Patentis:

1. A window stop comprising, a frame having a back, a top, and a bottomso that the frame is substantially U-shaped when viewed from either end,a yoke having a back and ends so that the yoke is substantially U-shapedwhen viewed from the top or bottom, the yoke fitting into the frame withtheir backs substantially parallel and with the ends of the yokeextending forward, a resilient cylinder having an axis extendingsubstantially from one end of the yoke to the other, means rotatablysecuring the cylinder to the ends of the yoke with a portion of thecylinder extending beyond the ends of the yoke, the back of the framehaving a central opening, a stem secured to the back of the yoke andextending back through said opening, a compression spring encompassingthe stem between the inside of the frame and the back of the yoke,spring biased .antifraction means between the top and bottom of saidframe and the back of said yoke, structure secured to the end of thestem for keeping the stem from passing out of said opening, and openingsextending through the back of the frame lengthwise thereof for passageof screws for securing the window stop to the window frame.

2. A window stop comprising, a frame having a back, a top and a bottomso that the frame is substantially U-shaped when viewed from either end,a yoke having a back which is longer than the back of the frame, andends so that the yoke is substantially U-shaped when viewed from the topor bottom, the yoke fitting into the frame with their backssubstantially parallel and with the ends of the yoke extending forward,a resilient cylinder having an axis extending substantially from one endof the yoke to the other, means rotatably securing the cylinder to theends of the yoke with a portion of the cylinder extending beyond theends of the yoke, the back of the frame having a central opening, a stemsecured to the back of the yoke and extending back through said opening,a compression spring encompassing the stem between the inside of theframe and the back of the yoke, spring biased antifriction means betweenthe top and bottom of said frame and the back of said yoke, structuresecured to the end of the stem for keeping the stem from passing out ofsaid opening, openings extending through the back of the framelengthwise thereof, and blocks having openings aligned with the openingsin the back of the frame, the blocks spacing the frame from the side ofthe window when the frame is secured to the side of a window, byfasteners extending through said openings in the back of the frame andin the blocks.

3. In a window stop for holding window sash at any desired elevationcomprising in combination, a base adapted to be fastened to a supportingstructure; a member having arm means extending in one direction and astem extending in an opposite direction, said stem being adapted to passthrough a hole in said base and to reciprocate therein; spring-pressedball means in said base adapted to cooperate with said member forproviding free reciprocable movement of said member; a spring betweensaid base and member, normally urging said member away from said base;means for limiting the extent of movement of said member away from saidbase; and roller means journaled on said arm means, whereby when saidbase is attached to a sash such that said roller means is in contactwith a surface that is parallel with the path of sash movement, and withthe spring between said base and member partly compressed, said sash isforced into frictional contact with its track to thereby hold said sashat any desired elevation without inhibiting the raising and lowering ofsaid sash.

4. In a window stop for holding window sash at any desired elevationcomprising in combination, a base member adapted to be fastened to asupporting structure; a yoke having parallel spaced arms extending inone direction and a stem extending in an opposite direction, said stembeing adapted to pass through a hole in said base member and toreciprocate therein; spring-pressed ball means in each arm adapted tocooperate with said yoke for providing free reciprocable movement ofsaid yoke; a spring between said base member and yoke, normally urgingsaid yoke away from said base member; means for limiting the extent ofmovement of said yoke away from said base member; and roller meansjournaled between the arms of said yoke, whereby when said base memberis attached to a sash such that said roller means is in contact with asurface that is parallel with the path of sash movement, and with thespring between said base member and yoke partly compressed, said sash isforced into frictional contact with its track to thereby hold said sashat any desired elevation without inhibiting the raising and lowering ofsaid sash.

References Cited in the file of this patent UNITED STATES PATENTS1,069,932 Dupart Aug. 12, 1913 1,437,040 Butterworth Nov. 28, 19221,553,306 Busby Sept. 15, 1925 1,697,244 Fitzgerald July 31, 19282,225,528 Tarter Dec. 17, 1940 2,547,108 Anderson Apr. 3, 1951 2,673,783Rahm et al Mar. 30, 1954 FOREIGN PATENTS 19,907 Great Britain Aug. 30,1897 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No,3,141,691 July 21, 1964 George S. Gunard It is hereby certified thaterror appears in the above numbered patent requiring correction and thatthe said Letters Patent should read as corrected below.

Column 1, line 27, for "adapated" read adapted line 64, for "degress"read degrees line 68, for "'asectional" read a sectional column 2, line4, for "been" read be seen line 12, for "for" read of line 22, for"been" read be line 34, after "of" insert the line 61, for "inventoin"read invention column 3, line 28, for "antifraction" read antifrictioncolumn 4, line 52, in the references cited, for "1,697,244" read1,679,244

Signed and sealed this 24th day of November 1964,,

(SEAL) Attest:

ERNEST W. SWIDER EDWARD J. BRENNER Aflosting Officer Commissioner ofPatents

